Safety razor



March 3, 1931. E. c. CARMAN SAFETY RAZOR 2 Sheets-Sheet l I Filed April 10. 1930 March 3, 1931. E. c. CARMAN SAFETY RAZOR Filed April 10. 1930 2 Sheets-Sheet 2 (Ittorneg Patented Mar. 3, 1931 UNITED STATES PATENT OFFICE Application filed April 10,

The present invention relates to improvements in safety razors, and has for an obJect to provide an improved safety razor havlng a substantially rectangular or polygonal construction in which a plurality, preferably four, cutting edges are provided, whereby to give double or more life and use of the safety razor blade.

Another object of the invention is to, provide an improved safety razor in which the razor blade, guard and base plate are divided into a number of separated sections, the guard and base plate sections adapted to receive individual sections of I the flexible blade,

whereby each blade section may be flexed mdependently of each of the other sections.

A further object of the invention is to provide a simple and inexpensive form of safety razor having the improved characterlstics as above indicated.

With the foregoing and other objects in view, the invention will be more fully de scribed hereinafter, and will be more particularly pointed out in the claim appended hereto.

In the drawings wherein like symbols refer to like or corresponding parts throughout the several views,

Figure 1 is a top plan view of the improved safety razor constructed according to the present invention.

Figure 2 is a side view of the same.

Figure 3 is a section taken on the-line 3-3 in Figure 1.

Figure 4 is a section taken on the line 44 in Figure 3.

Figure 5 is a fragmentary perspective view of the improved guard.

Figure 6 is a similar view of the base plate,

and p p Figure 7 is also a fragmentary'perspective view of the improved blade.

Figure 8 is a plan view of a modified form of razor.

Figure 9 is a cross section taken on the lin 99 in Figure 8.

Figure 10 is a longitudinal section taken on the line 10-10 in Figure 9, and

Figure 11 is a fragmentary perspective view of a modified form of guard plate.

1930. Serial No. 443,144.

Referring more articularly to the drawings, in Figure 6, l show the improved base plate as consisting of a central rectangular or polygonal area or section 10 from which projects the threaded pin 11 by which the base plate is secured to the handle 12, shown in Fi ures 2 and 3, the handle having a threaded soc et 13 therein to receive said pin, as illustrated in Figure 3.

Returning to Figure 6, the central subgiving a smooth surface and a neat appearance.

The improved base plate is also provided with lugs 17 which project upwardly at the corner portions of the central flat area 10 and preferably have rounded free edges 18 for the purpose of facilitating the assembly of the parts.

Now referring more particularly to Figure 7, the improved blade is shown as comprised of steel or some other flexible material adapted to take the desired temper and cutting edges. The blade is preferably made in one piece with a central area 19, wings 20, slots 21 and cutting edges 22. The slots 21 extend inwardly to the central area and are diagonal so as to register with the slots 15 of the base plate. The outer portions of the wings are rounded or tapered, as indicated at 23, to give a smooth surface and a neat appearance. The blade is perforated centrally, as shown at 24, to receive the pin 11 ofthe base plate.

Referring now to Figure 5, the improved guard plate is also of metal or other appropriate material of a .rigid character made with a central area or section 25 corresponding approximately to the central area 10 of the base plate and having a central perforation 26 to receive therethrough the threaded pin 11.

The guard is also provided with the wings 27, which extend outwardly from the central section 25 and are curved or of the concavo convex form shown of the base plate in Figure 6.

Slots 28 are formed between the Wings 27 of the guard and at the outer portions of the slots the wings are curved or tapered to agree with the curvature and taper of the other parts. The guard wings 27 are provided with the teeth 30 which teeth are slightly elongated over the wings of the base plate.

In assembling the razor the flat blade is placed over the base plate, the perforation 24 being fitted to the screw post 11. The guard is then placed upon the blade, the perforation 26 being also made to slip over the threaded post 11. In assembling the parts, the lugs 17 of the base plate will enter the slots 21 of the blade and the slots 28 of the guard, thus securing the alinement and proper registration of the three component parts of the razor. The handle 12 is now applied, the socket 13 thereof being screwed onto the post 11, whereby the base plate and guard are advanced toward one another, flexing the blade therebetween and causing the several wings 20 of the blade to assume the curvature of the opposing wings of the base plate and guard.

In this way the blade is subjected to tension and the cutting edges 22 thereof are brought to correct positions extending slightly beyond the outer edges of the wings 14 of the base plate and slightly within the guard fingers 30 of the guard. The blade edges 22 are thus exposed for shaving, but the guard fingers act to protect the face.

In the use of the improved razor, one side thereof maybe selected and drawn across the face in the usual manner of shaving; after which subsequent sides of the razor may be brought into use. In the actual operation of shaving the blade edges become clogged with the soap and with particles of hair and it is necessary repeatedly in the act of shaving to loosen the parts and clean the same before proceeding with the operation. With the use of four blade edges, this necessity will be dispensed with. Moreover the life of the blade will be increased and the convenience of shaving will be promoted. It will be noted that the side edges of the base plate, blade and guard are all rounded off or beveled and p this will avoid any accidental cutting of the face through casual lateral movement of the razor.

Referring more particularly to Figures 8 to 11 inclusive, of the drawings, I have shown a modified form of the guard plate. The base plate, blade and handle are all identical with like parts described in connection with the first form of the device, and bear similar reference characters.

This modified form of guard plate is provided with two opposed edges having teeth 30', and two opposed edges 40, which are smooth, and which extend out from the center of the guard plate at a distance equal to the distance from the center of the guard plate to the outermost ends of the teeth 30. In other words, the smooth edges 40 will extend beyond the edges of the blade and the base plate, the idea being to guard against the operator cutting himself on the nose, ear, neck, or other places with the side edges of the razor while it is in use. It will be noted that the edges of the guard plate with the teeth 30' are opposite to one another, and the smooth edges 40 are also disposed opposite one another.

The razor is similar to that described in connection with Figures 1 to 7 inclusive, the only change involving the guard plate for the purpose of preventing accidental cutting with the opposite edges which are disposed at right angles to the edges being used.

To use the two opposite edges of the blade at right angles to those just in use, namely, those edges of the blade previously obscured by the smooth edges 40 of the guard plate, it only becomes necessary to loosen the handle and shift the guard plate around, so that the two edges of the plate previously masked will be exposed at the guard fingers 30. The edges recently in use will, of course, be masked by the smooth edges 40 of the guard plate. If desired. the guard plate may be slightly longer from smooth edge 40 to smooth edge, than'from toothed edge 30' to the opposite toothed edge, whereby the smooth edges may extend beyond the edges of the blade, and in this way, effectively prevent accidental cutting at the sides of the razor.

It is obvious that various changes and modifications may be made in the details of const'ruction and design of the above specifically described embodiment of this invention without departing from the spirit thereof, such changes and modifications being restricted only by the scope of the following claim.

What is claimed is 2- An improved safety razor comprising a base plate having a flat central octagonal section having two pairs of opposed sides of equal length and two pairs of diagonally oposed sides of equal length, but of less length than the first mentioned sides, a threaded post on said section, individual concavoconvex wings extending outwardly from the first mentioned sides of said central section and being separated by diagonal slots extending from the second mentioned sides of the central section, the sides'of the outer portions of the wings being curved, lugs stamped from the material of the base plate and from the portions removed to make the slots and upstanding from the second mentioned sides of the central part, a rectangular flexible blade having a central octa onal section having two pairs of opposed si es of equal length and two pairs of diagonally opposed sides of equal length, but of less len h than the first mentioned sides, and also aving a central aperture to fit over the post and with diagonal slots extendin from the sides of lesser length to receive said lugs,.individual wings extending from the longer sides of the central portion of the blade, a guard of rectangular construction having four toothed edges with diagonal slots adapted to receive said lugs and a central perforation to receive the threaded post, and a handle having a threaded socket to receive said post.

EDWIN CLEVELAND CARMAN. 

